Saponarin

Saponarin
Names
	IUPAC name 5-hydroxy-2-(4-hydroxyphenyl)-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-7-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one
	Other names Isovitexin-7-O-glucoside; Saponaretin-7-O-glucoside
Identifiers
CAS Number	20310-89-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	390121;
PubChem CID	441381;
UNII	3081Z76OX9 ;
CompTox Dashboard (EPA)	DTXSID10174201 ;
	InChI InChI=1S/C27H30O15/c28-7-15-19(32)22(35)24(37)26(40-15)18-14(41-27-25(38)23(36)20(33)16(8-29)42-27)6-13-17(21(18)34)11(31)5-12(39-13)9-1-3-10(30)4-2-9/h1-6,15-16,19-20,22-30,32-38H,7-8H2/t15-,16-,19-,20-,22+,23+,24-,25-,26+,27-/m1/s1 Key: HGUVPEBGCAVWID-KETMJRJWSA-N; InChI=1/C27H30O15/c28-7-15-19(32)22(35)24(37)26(40-15)18-14(41-27-25(38)23(36)20(33)16(8-29)42-27)6-13-17(21(18)34)11(31)5-12(39-13)9-1-3-10(30)4-2-9/h1-6,15-16,19-20,22-30,32-38H,7-8H2/t15-,16-,19-,20-,22+,23+,24-,25-,26+,27-/m1/s1 Key: HGUVPEBGCAVWID-KETMJRJWBK;
	SMILES c1cc(ccc1c2cc(=O)c3c(o2)cc(c(c3O)[C@H]4[C@@H]([C@H]([C@@H]([C@H](O4)CO)O)O)O)O[C@H]5[C@@H]([C@H]([C@@H]([C@H](O5)CO)O)O)O)O;
Properties
Chemical formula	C27H30O15
Molar mass	594.52 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Saponarin is a flavone glucoside. It is found in Saponaria officinalis and in Strongylodon macrobotrys where it imparts the characteristic jade color to the flower. This coloration has been shown to be an example of copigmentation, a result of the presence of malvin (an anthocyanin) and saponarin in the ratio 1:9. Under the alkaline conditions (pH 7.9) found in the sap of the epidermal cells, this combination produced a blue-green pigmentation; the pH of the colorless inner floral tissue was found to be lower, at pH 5.6. Experiments showed that saponarin produced a strong yellow colouring in slightly alkaline conditions, resulting in the greenish tone of the flower.[1] It is also found in passion flowers (Passiflora sp.).

References

Greenish blue flower colour of Strongylodon macrobotrys. Kosaku Takeda, Aki Fujii, Yohko Senda and Tsukasa Iwashina, Biochemical Systematics and Ecology, Volume 38, Issue 4, August 2010, Pages 630–633, doi:10.1016/j.bse.2010.07.014

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[Takeda-1] Greenish blue flower colour of Strongylodon macrobotrys. Kosaku Takeda, Aki Fujii, Yohko Senda and Tsukasa Iwashina, Biochemical Systematics and Ecology, Volume 38, Issue 4, August 2010, Pages 630–633, doi:10.1016/j.bse.2010.07.014